A design method of repetitive controller against variation of grid frequency

被引：0
|
作者：
Zhu M. [1 ]
Ye Y. [1 ]
Zhao Q. [1 ]
He C. [1 ]
Xu G. [1 ]
机构：
[1] College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, Jiangsu Province
来源：
Ye, Yongqiang (melvinye@nuaa.edu.cn) | 1600年 / Chinese Society for Electrical Engineering卷 / 36期
基金：
中国国家自然科学基金;
关键词：
Grid-tied inverter; Internal model parameter; Repetitive control; Variation of grid frequency;
D O I：
10.13334/j.0258-8013.pcsee.151163
中图分类号：
学科分类号：
摘要：
Repetitive control which produces high gains, can improve current quality of grid-tied inverter. However, the tracking accuracy of the system degrades because of grid frequency variation. In classical repetitive control, a parameter Q is proposed to improve the stability of internal model. The equivalent relation between the repetitive control with internal model parameter and the quasi-resonant controller was analyzed to prove that the internal model parameter Q could improve the adaptability of the repetitive control to the grid frequency variation to a certain extent. By analyzing the stability of LCL-type inverter with repetitive control, a design method of repetitive control's gain parameters was proposed, which solved the low-gain problem caused by the internal model parameter Q. Simulation and experiments show that the proposed repetitive controller has good ability against variation of grid frequency. © 2016 Chin. Soc. for Elec. Eng.
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收藏
页码：3857 / 3867
页数：10
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